Cotton-gin.



E. A. CARMOUCHE.

0011011 GIN.

APPLICATION FILED FEB. 20, 19i5. 4 1,151,565. Patented Aug. 31, 1915. 2 SHEETSSHEET I.

wmeoow E. A- CARMOUCHE.

comm em.

APPLICATION FILED FEB, 20. 1915.

Patented Aug. 31, 1915 2 SHEETSSHEET 2.

3 wuwn toz A I @5 3 M P/ Q ETD STATES PATENT @Ff ifim EMILE A. CARMOUCHE, OF CROWLEY, LOUISIANA.

COTTON-GIN.

Specification of Letters I'atent.

Patented Aug. 31, 1915.

Application filed February 20, 1915. Serial No. 9,582.

To all whom it may concern Be it known that I, EMILE A. CARMOUCHE, a citizen of the- United States, and a resident of Crowley, in the parish of Acadia and State of Louisiana, have invented certain new and useful Improvements in Got ton-Grins, of which the following is a description.

This lnvention'relates to lmprovements in cotton gins in which the delinting is accomplished by means of a gin-saw. In gins of chopping blow that tends to break the fiber against the ribs and thus,produces a short staple product. Such an action is particularly objectionable in ginning long fiber cotton, as the fiber is often broken so as to injure the long staple.

The object of the present invention is to provide ribs that will eliminate the chopping blow of the saw-tooth. This is accomplished by substituting for the ordinary fixed ribs annular ribs that travel with the saw in a somewhat eccentric path so that a saw-tooth will gradually enter between its two coacting ribs during the delinting operation. By this means the fiber will be gradually drawn between the ribs and saw-tooth without any chopping action and the fiber will be torn directly ofi the seed rather than broken off some distance from the hull. In this Way the entire length of the fiber is secured, which is particularly desirable in the production of a long staple.

The invention consists in the novel construction, combination and arrangement of parts hereinafter described, pointed out in the appended claims, and illustrated by the accompanying drawings.

In the drawings, in'which similar reference characters designate corresponding parts, Figure 1 is a vertical sectional view through a cotton gin embodying the invention. Fig. 2 is a cross-sectional view through the gin-saw and coacting ribs. Fig. 3 is a detail view of one of the annular ribs. Fig. 4 is a detail view of one of the spaceblocks between the saws. Fig. 5 is a view, part in front elevation and part in longi- I chine.

tudinal section, of the gin-saw and annular ribs.

The gin, apart from the saw and annular ribs, is of the usual construction. Briefly, it comprises the roll-box 1 to receive the cotton to be treated, the rotary brush 2 for,

removing the lintfrom the saw-teeth, the wind-board 3 to prevent the air-currents created by the brush from disturbing the lint on the teeth before they reach the rotary brush, and the mote-board 4: to receive the lint from the brush. j The cylindrical gin saw comprises the annular toothed blades 5 fixed on the tubular shaft 6 journaled at its ends in bearings carried by the side frames of the gin. The blades are separated by the space-blocks7 fixed on the tubular shaft between the blades. Through each space-block and the adjacent wall of the tubular shaft pass the four radial openings 8 quadrantly spaced around the shaft.

Passing eccentrically through the tubular shaft 6 is the solid shaft 9' journaled at its ends in bearings on the sides of the ma- Projecting radially from the solid shaft 9 are the four spokes 10 that pass through the four openings 8 of each spaceblock. Each opening 8 is somewhatlonger in the direction of travel of the saw than the width of its spoke 10 in the same direction, so that the spoke can have some play relative to the saw in the arc of rotation. On the outer ends of each set of four spokes 10 is secured the'annular rib 11 concentric to the shaft 9. The width of rib is such as to just clear the sides of the adjacent blades 5, and the thickness of the rib is such as to give it the necessary strength. The diameter of each annular rib is somewhat less 13 within the roll-box the minor part of the circumference of the grid extends above or outside of the circumference of the saw.

Outside of these limits the major part of the circumference of the grid, owing to its shorter diameter, is inside of thecircumthe same speed by belts passing over pulleys on the ends of their respective shafts.

I The elongated slots 8 through which the spokes 10 pass permit a slight relative movement between the grid and the saw to compensate for any irregularity in the rotation of the two members.

The operation of the gin is as follows: After the cotton is fed into the roll-box and the machine is started the rotation of the 'saw will cause a tooth in traveling from the front of the roll-boxto the point 12 to pick up more or less fiber as it passes through the cotton. As the tooth travels along toward. the point 12 it carries the fiber with it clinging to the seed. When the tooth reaches the point 12 it gradually commences to enter between the two adjacent ribs of the grid. As'the tooth continues to enter farther between the ribs carrying the fiber with it the seed is held by the ribs and the fiber is torn from the seed. Theentrance of the tooth between the ribs is gradual and easy and there is no abrupt chopping action as with the ordinary fixed ribs. This easy-movement of the tooth is further facilitated by the fact that the two adjacent ribs are traveling with it in the same general direction. Consequently there is much less liability of the fiber becoming broken and it is much more apt to be torn This treatfrom the seed close to the hull. ment is particularly adapted to long fiber cotton when a long staple is desired. After;

the tooth passes the point 13 it commences to emerge from between the two adjacent ribs carrying with it the lint torn from the seed. After traveling a short distance farther the lint is removed from the tooth by the rotary brush 2 and deposited on the mote-board 4 and leaves the gin in the usual manner through the rear passage 14:. The seed separated from the fiber falls downward between the saw-blades from the rollbox and escapes through the passage 15.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a cotton-gin, a rotatable circular blade having teeth on its periphery, and annular ribs on opposite sides of the blade and rotatable with the same, said blade and said.

ribs being eccentrically mounted on axes in close proximity to each other and with both axes inside of the circumferences of both the blade and the ribs, the eccentricity of the blade and ribs being such that for part of their circumference the ribs extend Copies of this patent may be obtained for blade.

. the blade and adjacent ribs being such that the major part of the circumference of the ribs is inside of the circumference of the blade and the minor part of the circumference of the ribs projects slightly outside of the circumference of the blade.

3. In a cotton-gin, a rotatable cylindrical gin-saw comprising a series of toothed circular blades spaced apart, and a rotatable cylindrical grid comprising a series of annular ribs interspaced with thetoothed blades of the gin-saw, said gin-saw and said grid being eccentrically mounted on axes in close proximity to each other and with both axes passing longitudinally through both the gin-saw and the grid, the grid for a part of its circumference being contained within the circumference of the gin-saw and the grid ence projectingbeyond the periphery of the i adjacent blades.

5. In a-cotton-gin, a tubular shaft, a series of toothed blades spaced apart on the tubula-r shaft, space-blocks on the tubular shaft between the blades, a second shaft mounted eccentrically in the tubular shaft, spokes on the inner shaft extending through the Wall of the tubular shaft and the space-blockswith the openings through which the spokes pass enlarged to permit a limited oscillationof the spokestherein, and a series of annular ribs carried by the spokes and interspaced with the toothed blades, said ribs being of a less diameter than the toothed blades and eccentric thereto so that for part of the circumference the series of ribs project outside of the series of toothed blades.

In testimonywhereof Ihereunto affix my.

signature in-the presence of two witnesses.

EMILE .A. CARMOUOHE. ,y

Witnesses:

J. K. FOLER, W. S. WHITE.

five cents each, byaddress ing the uominissioner of g ming;= Washingtcmfl'. i 

